Gas-regulator.



PATENTED JULY 10, 1906.

H. C. GRIMBS.

GAS REGULATOR.

APPLICATION FILED 11,511.28, 1906.

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UNITED STATES PATENT oEEioE.

Specification of Letters Patent.

fau-.need July 10,1906.

AppHGation led March Z8, 1906. Serial No. 308.511.

To /LZZ whom it may concern,.-

Be it known that I, HARRY C. Gnnuns, a citizen of the United States of America, residing at Tcrra Alta, in the county of Preston and State of West Virginia, have invented' dence and similar buildings where natural and artificial gas is used as a fuel and for illuminating purposes.

To this end I have devised a regulator which is actuated when a reduction of the gas-pressure takes place and is adapted to entirely shut off the gas should the pressure of the gas become very low.

With the above and other objects in view the invention consists in a novel construction, combination, and arrangement of parts to be hereinafter more. fully described and claimed.

Referring to the drawings accompanying this application, like numerals of reference designate similar parts throughout the several views, in Which- Figure 1 is a side elevation of a regulator constructed in accordance with my invention. I

Fig. 2 is a longitudinal sectional view of the same. Fig. 3 isa similar view illustrating the piston or valve in the position it occupies when full pressure of gas is againstthe same, and Fig. `4 is a transverse vertical sectional view taken on the line x of Fig. 3.

To put my invention into practice,-I provide'a fitting which is adapted to be connected to a supply-pipe (not shown) and has communication with a lamp, stove, burner', or

other like device in which gas is used. Thisy fitting comprises a main or body member 1 in the form of a tube or cylinder, one end of which is threaded, as shown, for convenient attachment to a supply-pipe. Inte ral with 'the main or body member 1 is an out et memmember 1 is interiorly ber 2, which joins with the main or body member 1 substantially at right angles thereto and is bent to lie in a plane substantially parallel with said main or body member 1. The free end of the member 2 is also threaded, as shown, for attachment to either a pipe or to the device in which the gas is'consumed.

The opposite end of the main or body threaded and receives a plug 3, provided with an aperture theretlirough'to receive a piston-rod 4. This piston-rod 4 is preferably square in cross-section, though not necessarily so, and works in the plug 3. On its inner end the piston-rod 4 carriesl a piston or valve 5 of a cylindrical form to fit the inner circumference of the member 1. If desired, packing-ringsmay be used on this piston or valve to effect an airtight connection between the periphery thereof and the walls of the chamber within Vthe member 1. i A spring 6 encircles the pistonrod 4 between the piston or valve 5 and the plug 3and said plug 3 is provided with a radial opening` in which is fitted an auxiliary plug 8. Arranged in the plug 8 is a lockingpin 9, provided on its outer end with a suitable knob or handle 10. Within the opening 7 beneath plug 8 is a sprin 11, one end.of

which is attached to the loc 'ng-pin to hold the lower end of the latter normally in engagement with piston-rod 4. Said rod 4 is provided with a notch 12 to receive the end of said pin when the piston or valve is in the closed position, as shown in Fig. 2. The outer end of the piston-rod 4l is preferably provided wi th a removable handle or knob 14 to permit of easy manipulation of said rod.

The spring 6 employed has a tension corres onding tothe pressure of the gas enterin tlie main body or member l-that is, the sai yspring is of slightly less tension than the pressure of the gas-whereby the latter will normally hold the piston or valve in the open position, as shown in Fig. 3 of the drawings. If, however, the pressure of the gas ceases or 'I oo becomes materially reduced, the spring acts v to force the piston head'or valve 5 to the closed position. (Shown in Fig. 2 of the drawings.) When the piston head or valve reaches this position, lockingpin 9 takes into notch 12 in the piston-rod 4 and holds the piston head or valve 5 in closed position.

The device is adapted to prevent accidental escape of the gas after the same has been reduced to such an extent as to extinguish an .an integra the llame, the pressure afterward increasing and the gas discharging without being ignited. To reset the device or permit the gas to again flow when desired, it is, merely necessary to raise pin 9, so as to remove the same from notch 12 in order lthatthe pressure of the gas may overcome the tension of spring 6 and allow the gas to again pass from the supplypipe through outlet branch 2, p

aving fully described my invention, what 1i An automatic cut-oil comprising a fittin embodying a main tubularinlet member, outlet member, communicating with the main tubular member intermediate its ends, a-nd lying substantially parallel therewith, .in vcombination with shut-oil mechanism comprising a plug, in the end of the inlet member, a piston-rod working in said plug, a piston or valve on the inner end of said rod, a spring encircling the rod between the piston or valve and said plug, and

a locking-pin at the closed'end of the inlet at one end and closed at its other end by a plug, an outlet member communicating with the inlet member intermediate its ends, and closerpto the open end of said inlet member working through the plug in the closed end of the inlet member, and. carrying a' piston head orl valve, a spring between said piston head or valve and the plug in said member, and locking means supported at the closed end of the inlet member for locking 'the piston-rod and its piston head or valve against movement.

In testimony whereof I affix my signature in the presence of two witnesses.

-HARRY C. GRIMES. n Witnesses:

J. J. JENKINS,

L. GEO. BURBowER.

Vthan to the closed en d thereof, a piston-.rod 4 

